The starting point of the mountain bike route is Krupa village. Proceed along the village on the paved road near the water filling station. About 150 meters from the station there is the crossroad. Turn right on unpaved road to the north course. The trail proceeds above the spring of river Krupa. The unpaved road turns soon in a rocky varrigeway with a steep ascent. After about 6,3 km there is the next junction. The junction is above Duboki Dol valley and in front of Tremzina mountain. Turn sharp left and proceed on the carriageway, first to the west and than to the north course. After about 1.6 km, on the next junction turn left and proceed to the north course. The trail passes along the saddle near the west side of Tremzina mountain. After about 2.4 km there is the next crossroad, turn right on the carriageway. This section is situated on the north side of Tremzina mountain. Proceed through the forest for about 1.1km. On the next junction turn right on the carrigeway and proceed to the east course. The trail course gradually turns to the south and south west course. The steep descent follows to Turovac valley. In the valley keep the course to the west riding on the carriageway hard visible in the long grass. There is a hiking section and it could take around 20-30 minutes to pass the saddle between Turovac valley and Duboki Dol valley. From the saddle proceed to the south west course to find the beginning of the carriageway to Duboki Dol valley. A steep descent with few turnings on very rocky dirt road follows to the valley. Proceed on the carriageway along the north side of Duboki Dol valley. On the next junction turn left and proceed on the steep ascent. You will be back on the junction above Duboki Dol valley. Turn left and proceed back on the same trail to Krupa village. For more details check above Map and below Gallery of the route.